Chain and cutter-carrying device.



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T. G. AULTMAN.

- GHA IN AND CUTTER CARRYING DEVICE.

APPLIGATION FILED JUNE 28. 1902.

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- UNITED STATES Patented April 18, 1905.

PATENT OFFICE.

THOMAS G. AULTMAN, OF FAIRMONT, WEST VIRGINIA, ASSIGNOR TO JOSEPH A. JEFFREY, OF COLUMBUS, OHIO.

CHAIN AND CUTTER-CARRYING DEVICE.

SPECIFICATION forming part of Letters Patent No. 787,551, dated April 18, E505. Application filed June 28, 1902. Serial No. 113,664.

To all whom it may concern.-

Be it known that I, THOMAS Gr. AULTMAN, a citizen of the United States, residing at Fairmont, in the county of Marion and State of West Virginia, have invented certain new and useful Improvements in Chains and Cutter- Carrier Devices, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in chains and cutter-carrier devices connected therewith which are used in machines for mining coal and similar mechanisms.

The object is to provide a chain and cuttercarrier which shall have the greatest possible strength with economy of metal and cost of manufacture and one to which the cutters can be fitted and wherein they can be adjusted with greater convenience than has been incident to the devices for these purposes that have been heretofore employed.

Figure 1 shows in plan view one of the carrier-frames of a mining-machine adapted to have applied thereto a chain and cutter-holder embodying my improvements. Fig. 2 is a plan view of a section of the cutter-chain detached and on an enlarged scale. Fig. 3 is a cross-- section of the chain in Fig. 2. Fig. 4 is an end view, and Fig. 5 a plan view, of a cutter-carrying link. Fig. 6 is an end view, Fig. 7 a

-plan view, and Fig. 8, a face view, of a cuttercarrying link having the cutter-sockets, arranged somewhat differently from those in Figs. 4 and 5. Fig. 9 is an end View of one of the links connecting the cutter-carrying links. In the drawings, A indicates a portion of the chain-supporting frame or cutter-frame, such as is now commonly used in coal-mining machines; but it willbe understood that the present improvements are not restricted to any particular form of mining-machine so far as concerns the carriage, the bed-frame, gearing, engine, and other parts supplemental to the chain. In these machines'it is customary to have a chain-guide around more or less of the chain-frame A, which guide is formed with lips or flanges (0, adapted to hold the chainlinks in proper lines, as will be more fully described below.

The chain whicli I have illustrated is built up of the links B B B each articulated to those adjacent. The links B are each formed of two side bars 6 6, each side bar having at each end an inwardly-turned tliimble or sleeve 6. The thimbles furnish the draft-receiving parts and also receive the binding and fastening pins or pintles to be described. The links B and B are the cutter-carrying parts and are approximately similar to each other exceptfor certain differences in detail, which will be described below. v

Referring to the link B, it will be seen that it is composed of two parts G and O, the part at C being in line with the links B and the part C extending laterally outward therefrom. The part C is formed with a shank portion or body portion 0, at the ends of which are the coupling-eyes 0 and between which are the guide projections 0 parts 0 have apertures 0 within which are fitted snugly the thimbles or sleeves b. After the side bars 7) of the link B are fitted to the part C, with their sleeves b inserted oppositely into an aperture 0 they'(the side bars 6) and the link B are fastened together articulatingly by means of the pin F, which at its ends is upset or headed or provided with suitable retaining devices.

The laterally-projecting part of the link B is formed with a neck portion D and .the expanded'or head portion D. Adjacent to the neck part and between the projections c and the outer head part D there are open ways or groove-like passages d, in which are fitted the aforesaidfiange-lips a of the frame-guide, which act. to prevent the chain from either moving outward or inward beyond thedesired lines, but which have sufiicient clearance to allow the links to move rapidly and smoothly around their path. The head part D is expanded or flared downward and upward, as shown at d, and through the metal thus pro vided and through the neck part D and the shank at 0 there are formed cutter-receiving apertures E E, one inclined downward'and the other inclined upward.

At 613 (Z there are bosses or enlargements of the metal on the front side of the cutter- The coupling head, and each of these is provided with an aperture transverse to the cutter-apertures E E, as shown at (F. These apertures are threaded and adapted to receive set-screws G. The inner ends of the set-screws bear, respectively, against the shanks or stocks h of the cutters H H and fasten them firmly in place after adjustment.

The cutter-link at B is, as aforesaid, substantially similar to that at B just described, the difference being that the head part D is not expanded so much and the cutter-sockets E E are at lesser inclinations to the horizontal and the set-screws are arrangedone in front of the head and one in the rear of the same.

A cutter-chain can be built up by connecting together the links B B B under such arrangement as seems best for the purpose to be accomplished that is to say, it may be formed of a series of sections, each section having a link B, a link B, a link B and another link B, in which case throughout the entire chain there will be equal numbers of the several links, or there may be a greater number of the links B in the chain and a correspondingly lesser number of the links B or vice versa. It will be seen that with a chain of this character provision is made for attacking the coal or other material along four horizontal linesan extreme upper line an extreme lower line, and two intermediate ones. It will be also seen that the cutters are all alike and interchangeable, no special shaping being required with those of one line in comparison with those of another line. The cutters can be readily adjusted and can be easily withdrawn for sharpening or to permit the substituting of others. The articulating parts are so joined together that all cutting and wearing of the cross-pin is avoided, the sleeves 6 being so arranged as to not only take all of the draft in moving and applying power to the chain, but also take all of the wear incident to the articulating movements, and as these sleeves are of relatively large diameterthis wear is safely distributed over large surfaces and the durability and strength of the chain are greatly enhanced.

What I claim is 1. Ina cutting mechanism for mining-machines andsimilar purposes, a cutter-chain having a series of cuttercarrying linksyeach formed with a shank on the draft-line of the chain, and with a laterally-extending cuttersupporting body having a head, as at D, with two cutter-sockets inclined to the plane of the chain and extending continuously from the outer face of the head D through the shank part of the link, and a groove-like passage (1 between said head and the shank adapted to formed with a shank situated on the draft-line,

and a laterally-extending cutter-supporting body formed with a head D having two independent cutter-sockets in planes transverse of the chain and arranged to hold one cutter in advance of the other, each socket extending .through said head and shank, substantiallyas set forth.

3. In a cutting mechanism for mining-machines and similar purposes, a cutter-chain having 'a series of cutter-carrying links each formed with a shank situated on the draftline, and a laterally-extending cutter-supporting body formed with a head D having two independent cutter-sockets in planes transverse of the chain and arranged to hold one cutter in advance of the other, and means for clamping the cutters in said sockets independently of each other, each socket extending longitudinally through said head-shank, substantially as set forth.

4. In a cutting mechanism for mining-mar chines and similar purposes, a cutter-chain having a series of cutter-carrying links, each formed with a shank on the draft-line of the chain and with a laterally-extending cuttersupporting body having a head as at D with two independent cutter-sockets arranged at an angle to each other and adapted to hold one bit in advance of the other and in different horizontal planes, said sockets extending continuously from the outer face of the head D through the shank part of the link, substantially as set forth.

5. In a cutting mechanism for mining-ma receive the guide-flange for the chain on the cutter-carriage and a head as at D with two cutter-sockets extending continuously from the face of the head through the neck part and through the shank part of the link, in

combination with cutters inserted in said sock ets, and set-screws for fastening the cutters in position independently of each other, sub stantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS G. AULTMAN. Witnesses: I

' L. C. JoNEs, l

D. B. SNIDER. 

